Revert "Further centralize computation of GrSurface VRAM consumption"

Revert "Further centralize computation of GrSurface VRAM consumption"

This reverts commit ccd3c8937fce4bb28df19533ed043cad209e277d.

Reason for revert: Blocking Chromium roll: https://codereview.chromium.org/2482643002/

Original change's description:
> Further centralize computation of GrSurface VRAM consumption
>
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4383
>
> Change-Id: I054b74f2cd15f904f8e05af0fda58d6e8a523eb9
> Reviewed-on: https://skia-review.googlesource.com/4383
> Commit-Queue: Robert Phillips <robertphillips@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>
>

TBR=egdaniel@google.com,bsalomon@google.com,robertphillips@google.com,reviews@skia.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=662630

Change-Id: I186db2a41eb2bd789e6f681b3547e32d9ca374cf
Reviewed-on: https://skia-review.googlesource.com/4443
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
Reviewed-by: Ben Wagner <benjaminwagner@google.com>